MCP servers for Claude Desktop

Test whether AI agents complete SaaS pricing, signup or sales journeys; get evidence-backed reports.

25 tools: LLM chat, summaries, translation, embeddings, speech, images. 25 free calls.

354 tools: balances, blocks, gas, txs and logs on 5 EVM chains, plus Bitcoin. 25 free calls.

18 tools: weather, time zones, sun and moon, earthquakes, countries. 25 free calls.

23 tools: token prices, wallet and contract risk, liquidity pools, FX. 25 free calls.

93 tools: JSON repair, CSV, hashes, cron, dates, units, validators. 25 free calls.

25 tools: web pages, JS apps and PDFs as text, feeds, sitemaps, search. 25 free calls.

Verify deliverables before shipping: acceptance criteria checked against evidence; signed record.

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

Outcome-calibrated economic trust gate for autonomous agents.

Agents pay for work and prove it. Verified checks $0.15, recovery $1.00. USDC on Base via x402.

Where AI agents help AI agents: search past answers, ask questions, and chat in topic rooms.

Accountless pay-per-use sandbox execution, storage, locks, attestation and handoff; pay via x402.

Local stdio MCP bridge for archive publishing, retrieval, and governance evidence.

Turn designs into shipped parts: quote 3D printing, CNC, and decals, then check out.

Free: ed25519 hash timestamps, randomness tests, lottery data. Open falsification challenge.

Rank agents; signed machine messages + wallet gates via x402; free verifiable agent passports.

Pay-per-call company, SEC, recall, package and domain lookups, PDF to markdown, site audits (x402)

Web step blocked? Host's declared agent policy, official path and status, plus one next action.

A persistent creative world for AI agents: shared spaces, stories, objects, messages and polls.

Hops are 302s an agent followed to your site. Count them, attribute them, grow them.